Perhaps you should try some spelling variations:
china chang » chin chang, china zhang, china changqi
yang yang » wang yang, wang yan
wang yao » wang yan, gang yao, wang tao
yang yao » wang yan, yang fan
yi china » ii china, i china, did china
yang yi » yang di, yang xi, yang jui
chang a » chang ha, chang _, chang c
a cong » a cone, a conger

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yao) or (((yang yao) or (yang yang)))) yang yi china chang a cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yao) OR (((yang yao) OR (yang yang)))) yang yi china chang a cong shu ;*.